Adding Integers with DIFFERENT SIGNS (positive + negative or negative + positive). Different Signs-Find the Difference Subtract the numbers and keep the sign of the number with the MOST chips (black = positive, red = negative) Example 1: -8 + 2 = -6 Example 2: -4 + 7 = 3. î î î.ifferent Signs-Find the Difference Subtract the numbers and keep the sign of the number with the MOST chips (black = positive, red = negative) Example 1: -8 + 2 = -6 Example 2: -4 + 7 = 3.
* A lubricant. Zinc Stearate is a zinc soap known for repelling water, and is used in the cosmetics and personal care industries as a lubricant. It is an insoluble salt made of commercial stearic acid, a mild fatty acid used as an emollient and lubricant, and is often combined with zinc oxide.
Reaction of zinc with acids. Zinc metal dissolves slowly in dilute sulphuric acid to form solutions containing the aquated Zn(II) ion together with hydrogen gas, H 2. In practice, the Zn(II) is present as the complex ion [Zn(OH 2) 6 ] 2+ .Zn(s) + H 2 SO 4 (aq) â Zn 2+ (aq) + SO 4 2- (aq) + H 2 (g).eaction of zinc with the halogens. Zinc dibromide, zinc(II) dibromide, ZnBr 2, and zinc diiodide, zinc(II) dibiodide, NiI 2, are formed in the reactions of zinc metal and bromine, Br 2, or iodine, I 2. Zn(s) + Br 2 (g) â ZnBr 2 (s) [white]. Zn(s) + I 2 (g) â ZnI 2 (s) [white].